61201515102 has 32 divisors (see below), whose sum is σ = 150649884672. Its totient is φ = 16141058784.

The previous prime is 61201515071. The next prime is 61201515127. The reversal of 61201515102 is 20151510216.

It is a congruent number.

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, 56044798 + ... + 56045889.

It is an arithmetic number, because the mean of its divisors is an integer number (4707808896).

Almost surely, 2^61201515102 is an apocalyptic number.

61201515102 is an abundant number, since it is smaller than the sum of its proper divisors (89448369570).

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

61201515102 is a wasteful number, since it uses less digits than its factorization.

61201515102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112090712.

The product of its (nonzero) digits is 600, while the sum is 24.

The spelling of 61201515102 in words is "sixty-one billion, two hundred one million, five hundred fifteen thousand, one hundred two".