61650506601515 has 64 divisors (see below), whose sum is σ = 80071078832640. Its totient is φ = 45298904555520.

The previous prime is 61650506601487. The next prime is 61650506601569. The reversal of 61650506601515 is 51510660505616.

It is not a de Polignac number, because 61650506601515 - 2⁶ = 61650506601451 is a prime.

It is a super-4 number, since 4×61650506601515⁴ (a number of 56 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61650506601515.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28849089527 + ... + 28849091663.

It is an arithmetic number, because the mean of its divisors is an integer number (1251110606760).

Almost surely, 2^{61650506601515} is an apocalyptic number.

61650506601515 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

61650506601515 is a deficient number, since it is larger than the sum of its proper divisors (18420572231125).

61650506601515 is a wasteful number, since it uses less digits than its factorization.

61650506601515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4872.

The product of its (nonzero) digits is 810000, while the sum is 47.

The spelling of 61650506601515 in words is "sixty-one trillion, six hundred fifty billion, five hundred six million, six hundred one thousand, five hundred fifteen".