61572147480 has 192 divisors, whose sum is σ = 203876244000. Its totient is φ = 16111208448.

The previous prime is 61572147467. The next prime is 61572147509. The reversal of 61572147480 is 8474127516.

61572147480 is a `hidden beast` number, since 6 + 1 + 572 + 1 + 4 + 74 + 8 + 0 = 666.

It is a super-2 number, since 2×61572147480² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13017756 + ... + 13022484.

Almost surely, 2^61572147480 is an apocalyptic number.

61572147480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61572147480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101938122000).

61572147480 is an abundant number, since it is smaller than the sum of its proper divisors (142304096520).

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

61572147480 is a wasteful number, since it uses less digits than its factorization.

61572147480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5418 (or 5411 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The spelling of 61572147480 in words is "sixty-one billion, five hundred seventy-two million, one hundred forty-seven thousand, four hundred eighty".