61520350323444 has 96 divisors (see below), whose sum is σ = 146544952619520. Its totient is φ = 20082487953792.

The previous prime is 61520350323389. The next prime is 61520350323451. The reversal of 61520350323444 is 44432305302516.

It is a super-2 number, since 2×61520350323444² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61520350323396 and 61520350323405.

It is a congruent number.

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, 100696339 + ... + 101305445.

It is an arithmetic number, because the mean of its divisors is an integer number (1526509923120).

Almost surely, 2^{61520350323444} is an apocalyptic number.

It is an amenable number.

61520350323444 is an abundant number, since it is smaller than the sum of its proper divisors (85024602296076).

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

61520350323444 is a wasteful number, since it uses less digits than its factorization.

61520350323444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609917 (or 609915 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 42.

The spelling of 61520350323444 in words is "sixty-one trillion, five hundred twenty billion, three hundred fifty million, three hundred twenty-three thousand, four hundred forty-four".