1102157474778 has 64 divisors (see below), whose sum is σ = 2613108263040. Its totient is φ = 343135353600.

The previous prime is 1102157474777. The next prime is 1102157474797. The reversal of 1102157474778 is 8774747512011.

1102157474778 is a `hidden beast` number, since 1 + 1 + 0 + 21 + 574 + 7 + 47 + 7 + 8 = 666.

It is a super-2 number, since 2×1102157474778² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1102157474771) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4462213 + ... + 4702728.

It is an arithmetic number, because the mean of its divisors is an integer number (40829816610).

Almost surely, 2^{1102157474778} is an apocalyptic number.

1102157474778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1102157474778 is an abundant number, since it is smaller than the sum of its proper divisors (1510950788262).

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

1102157474778 is a wasteful number, since it uses less digits than its factorization.

1102157474778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9165100 (or 9165094 counting only the distinct ones).

The product of its (nonzero) digits is 3073280, while the sum is 54.

The spelling of 1102157474778 in words is "one trillion, one hundred two billion, one hundred fifty-seven million, four hundred seventy-four thousand, seven hundred seventy-eight".