1272978546102 has 96 divisors (see below), whose sum is σ = 2908386673920. Its totient is φ = 401977405440.

The previous prime is 1272978546101. The next prime is 1272978546137. The reversal of 1272978546102 is 2016458792721.

1272978546102 is a `hidden beast` number, since 1 + 2 + 7 + 2 + 97 + 8 + 546 + 1 + 0 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272978546101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3626299 + ... + 3961817.

It is an arithmetic number, because the mean of its divisors is an integer number (30295694520).

Almost surely, 2^{1272978546102} is an apocalyptic number.

1272978546102 is an abundant number, since it is smaller than the sum of its proper divisors (1635408127818).

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

1272978546102 is a wasteful number, since it uses less digits than its factorization.

1272978546102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335718 (or 335715 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 54.

The spelling of 1272978546102 in words is "one trillion, two hundred seventy-two billion, nine hundred seventy-eight million, five hundred forty-six thousand, one hundred two".