61072026400 has 144 divisors (see below), whose sum is σ = 185881227840. Its totient is φ = 19035417600.

The previous prime is 61072026361. The next prime is 61072026403. The reversal of 61072026400 is 462027016.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (61072026403) 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, 434115 + ... + 557314.

It is an arithmetic number, because the mean of its divisors is an integer number (1290841860).

Almost surely, 2^61072026400 is an apocalyptic number.

It is an amenable number.

61072026400 is an abundant number, since it is smaller than the sum of its proper divisors (124809201440).

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

61072026400 is a wasteful number, since it uses less digits than its factorization.

61072026400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991467 (or 991454 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The spelling of 61072026400 in words is "sixty-one billion, seventy-two million, twenty-six thousand, four hundred".