7454778120072 has 32 divisors (see below), whose sum is σ = 20707717000800. Its totient is φ = 2484926039952.

The previous prime is 7454778120043. The next prime is 7454778120103. The reversal of 7454778120072 is 2700218774547.

It is a happy number.

7454778120072 is a `hidden beast` number, since 7 + 4 + 5 + 477 + 81 + 20 + 0 + 72 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17256430618 + ... + 17256431049.

It is an arithmetic number, because the mean of its divisors is an integer number (647116156275).

Almost surely, 2^{7454778120072} is an apocalyptic number.

7454778120072 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

7454778120072 is an abundant number, since it is smaller than the sum of its proper divisors (13252938880728).

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

7454778120072 is a wasteful number, since it uses less digits than its factorization.

7454778120072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34512861682 (or 34512861672 counting only the distinct ones).

The product of its (nonzero) digits is 6146560, while the sum is 54.

The spelling of 7454778120072 in words is "seven trillion, four hundred fifty-four billion, seven hundred seventy-eight million, one hundred twenty thousand, seventy-two".