19949274315610 has 12 divisors (see below), whose sum is σ = 35908719191658. Its totient is φ = 7979704076568.

The previous prime is 19949274315601. The next prime is 19949274315689. The reversal of 19949274315610 is 1651347294991.

It can be written as a sum of positive squares in only one way, i.e., 17954346884049 + 1994927431561 = 4237257^2 + 1412419^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13417981 + ... + 14830399.

Almost surely, 2^{19949274315610} is an apocalyptic number.

19949274315610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19949274315610 is a deficient number, since it is larger than the sum of its proper divisors (15959444876048).

19949274315610 is an frugal number, since it uses more digits than its factorization.

19949274315610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2824845 (or 1412426 counting only the distinct ones).

The product of its (nonzero) digits is 14696640, while the sum is 61.

The spelling of 19949274315610 in words is "nineteen trillion, nine hundred forty-nine billion, two hundred seventy-four million, three hundred fifteen thousand, six hundred ten".