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2061395831930 = 251969911551917
BaseRepresentation
bin11101111111110100110…
…001000010110001111010
321022001211012221021011012
4131333310301002301322
5232233214313110210
64214554150433522
7301634211315431
oct35776461026172
97261735837135
102061395831930
11725262230056
122936193628a2
1311c509240ac6
1471ab488c118
153894d050305
hex1dff4c42c7a

2061395831930 has 32 divisors (see below), whose sum is σ = 3906363836160. Its totient is φ = 781048284480.

The previous prime is 2061395831921. The next prime is 2061395831941. The reversal of 2061395831930 is 391385931602.

It is a happy 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, 552332 + ... + 2104248.

It is an arithmetic number, because the mean of its divisors is an integer number (122073869880).

Almost surely, 22061395831930 is an apocalyptic number.

2061395831930 is a deficient number, since it is larger than the sum of its proper divisors (1844968004230).

2061395831930 is a wasteful number, since it uses less digits than its factorization.

2061395831930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1558934.

The product of its (nonzero) digits is 1049760, while the sum is 50.

The spelling of 2061395831930 in words is "two trillion, sixty-one billion, three hundred ninety-five million, eight hundred thirty-one thousand, nine hundred thirty".

Divisors: 1 2 5 10 19 38 95 190 6991 13982 34955 69910 132829 265658 664145 1328290 1551917 3103834 7759585 15519170 29486423 58972846 147432115 294864230 10849451747 21698903494 54247258735 108494517470 206139583193 412279166386 1030697915965 2061395831930