61633220331354 has 64 divisors (see below), whose sum is σ = 147002945458176. Its totient is φ = 16843635414144.

The previous prime is 61633220331343. The next prime is 61633220331367. The reversal of 61633220331354 is 45313302233616.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79266579 + ... + 80040345.

It is an arithmetic number, because the mean of its divisors is an integer number (2296921022784).

Almost surely, 2^{61633220331354} is an apocalyptic number.

61633220331354 is an abundant number, since it is smaller than the sum of its proper divisors (85369725126822).

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

61633220331354 is a wasteful number, since it uses less digits than its factorization.

61633220331354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856259.

The product of its (nonzero) digits is 699840, while the sum is 42.

The spelling of 61633220331354 in words is "sixty-one trillion, six hundred thirty-three billion, two hundred twenty million, three hundred thirty-one thousand, three hundred fifty-four".