61529299260 has 192 divisors, whose sum is σ = 204295924224. Its totient is φ = 13639910400.

The previous prime is 61529299259. The next prime is 61529299267. The reversal of 61529299260 is 6299292516.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61529299267) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 884550 + ... + 951570.

It is an arithmetic number, because the mean of its divisors is an integer number (1064041272).

Almost surely, 2^61529299260 is an apocalyptic number.

61529299260 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 61529299260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102147962112).

61529299260 is an abundant number, since it is smaller than the sum of its proper divisors (142766624964).

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

61529299260 is a wasteful number, since it uses less digits than its factorization.

61529299260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67164 (or 67162 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 51.

The spelling of 61529299260 in words is "sixty-one billion, five hundred twenty-nine million, two hundred ninety-nine thousand, two hundred sixty".