61501006651 has 8 divisors (see below), whose sum is σ = 70289694720. Its totient is φ = 52713026088.

The previous prime is 61501006613. The next prime is 61501006657. The reversal of 61501006651 is 15660010516.

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

It is a cyclic number.

It is not a de Polignac number, because 61501006651 - 2¹³ = 61500998459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61501006657) 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, 24720 + ... + 351586.

It is an arithmetic number, because the mean of its divisors is an integer number (8786211840).

Almost surely, 2^61501006651 is an apocalyptic number.

61501006651 is a deficient number, since it is larger than the sum of its proper divisors (8788688069).

61501006651 is a wasteful number, since it uses less digits than its factorization.

61501006651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353753.

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 61501006651 in words is "sixty-one billion, five hundred one million, six thousand, six hundred fifty-one".