61498907532 has 432 divisors, whose sum is σ = 180608905568. Its totient is φ = 18274222080.

The previous prime is 61498907527. The next prime is 61498907551. The reversal of 61498907532 is 23570989416.

61498907532 is a `hidden beast` number, since 6 + 14 + 9 + 8 + 90 + 7 + 532 = 666.

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 143 ways as a sum of consecutive naturals, for example, 634009308 + ... + 634009404.

It is a 1-persistent number, because it is pandigital, but 2⋅61498907532 = 122997815064 is not.

Almost surely, 2^61498907532 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61498907532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90304452784).

61498907532 is an abundant number, since it is smaller than the sum of its proper divisors (119109998036).

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

61498907532 is a wasteful number, since it uses less digits than its factorization.

61498907532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 61498907532 in words is "sixty-one billion, four hundred ninety-eight million, nine hundred seven thousand, five hundred thirty-two".