102191742793720 has 16 divisors (see below), whose sum is σ = 229931421285960. Its totient is φ = 40876697117472.

The previous prime is 102191742793667. The next prime is 102191742793741. The reversal of 102191742793720 is 27397247191201.

It is a super-4 number, since 4×102191742793720⁴ (a number of 57 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1277396784882 + ... + 1277396784961.

Almost surely, 2^{102191742793720} is an apocalyptic number.

102191742793720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102191742793720 is an abundant number, since it is smaller than the sum of its proper divisors (127739678492240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102191742793720 is a wasteful number, since it uses less digits than its factorization.

102191742793720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2554793569854 (or 2554793569850 counting only the distinct ones).

The product of its (nonzero) digits is 2667168, while the sum is 55.

The spelling of 102191742793720 in words is "one hundred two trillion, one hundred ninety-one billion, seven hundred forty-two million, seven hundred ninety-three thousand, seven hundred twenty".