61532776315 has 8 divisors (see below), whose sum is σ = 74100249648. Its totient is φ = 49052275680.

The previous prime is 61532776313. The next prime is 61532776373. The reversal of 61532776315 is 51367723516.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61532776315 - 2¹ = 61532776313 is a prime.

It is a super-2 number, since 2×61532776315² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61532776313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21741616 + ... + 21744445.

It is an arithmetic number, because the mean of its divisors is an integer number (9262531206).

Almost surely, 2^61532776315 is an apocalyptic number.

61532776315 is a deficient number, since it is larger than the sum of its proper divisors (12567473333).

61532776315 is a wasteful number, since it uses less digits than its factorization.

61532776315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43486349.

The product of its digits is 793800, while the sum is 46.

The spelling of 61532776315 in words is "sixty-one billion, five hundred thirty-two million, seven hundred seventy-six thousand, three hundred fifteen".