61350452520 has 64 divisors (see below), whose sum is σ = 210344411520. Its totient is φ = 14022960384.

The previous prime is 61350452509. The next prime is 61350452531. The reversal of 61350452520 is 2525405316.

It is an interprime number because it is at equal distance from previous prime (61350452509) and next prime (61350452531).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36517287 + ... + 36518966.

It is an arithmetic number, because the mean of its divisors is an integer number (3286631430).

Almost surely, 2^61350452520 is an apocalyptic number.

61350452520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61350452520 is an abundant number, since it is smaller than the sum of its proper divisors (148993959000).

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

61350452520 is a wasteful number, since it uses less digits than its factorization.

61350452520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73036274 (or 73036270 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 61350452520 its reverse (2525405316), we get a palindrome (63875857836).

The spelling of 61350452520 in words is "sixty-one billion, three hundred fifty million, four hundred fifty-two thousand, five hundred twenty".