2861555097492 has 72 divisors (see below), whose sum is σ = 8902615869056. Its totient is φ = 754695849024.

The previous prime is 2861555097487. The next prime is 2861555097493. The reversal of 2861555097492 is 2947905551682.

2861555097492 is a `hidden beast` number, since 2 + 8 + 6 + 1 + 5 + 5 + 50 + 97 + 492 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2861555097493) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 436742008 + ... + 436748559.

Almost surely, 2^{2861555097492} is an apocalyptic number.

It is an amenable number.

2861555097492 is an abundant number, since it is smaller than the sum of its proper divisors (6041060771564).

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

2861555097492 is a wasteful number, since it uses less digits than its factorization.

2861555097492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873490597 (or 873490592 counting only the distinct ones).

The product of its (nonzero) digits is 54432000, while the sum is 63.

The spelling of 2861555097492 in words is "two trillion, eight hundred sixty-one billion, five hundred fifty-five million, ninety-seven thousand, four hundred ninety-two".