Search a number
-
+
12901311544990 = 2511282281415489
BaseRepresentation
bin1011101110111101001000…
…0101110111111010011110
31200200100112120202120112011
42323233102011313322132
53142333341223414430
643234440344301434
72501042345516251
oct273572205677236
950610476676464
1012901311544990
114124463037880
12154443b17187a
13727785ac67cb
143285d924d098
151758d566d22a
hexbbbd2177e9e

12901311544990 has 32 divisors (see below), whose sum is σ = 25333635206880. Its totient is φ = 4691358105600.

The previous prime is 12901311544949. The next prime is 12901311545063. The reversal of 12901311544990 is 9944511310921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30843166 + ... + 31258654.

It is an arithmetic number, because the mean of its divisors is an integer number (791676100215).

Almost surely, 212901311544990 is an apocalyptic number.

12901311544990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12901311544990 is a deficient number, since it is larger than the sum of its proper divisors (12432323661890).

12901311544990 is a wasteful number, since it uses less digits than its factorization.

12901311544990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697788.

The product of its (nonzero) digits is 349920, while the sum is 49.

The spelling of 12901311544990 in words is "twelve trillion, nine hundred one billion, three hundred eleven million, five hundred forty-four thousand, nine hundred ninety".

Divisors: 1 2 5 10 11 22 55 110 282281 415489 564562 830978 1411405 2077445 2822810 3105091 4154890 4570379 6210182 9140758 15525455 22851895 31050910 45703790 117284650409 234569300818 586423252045 1172846504090 1290131154499 2580262308998 6450655772495 12901311544990