61515071151007 has 8 divisors (see below), whose sum is σ = 61563065256000. Its totient is φ = 61467077919744.

The previous prime is 61515071150969. The next prime is 61515071151013. The reversal of 61515071151007 is 70015117051516.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61515071151007 is a prime.

It is a super-2 number, since 2×61515071151007² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61515071151707) 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, 280975119 + ... + 281193967.

It is an arithmetic number, because the mean of its divisors is an integer number (7695383157000).

Almost surely, 2^{61515071151007} is an apocalyptic number.

61515071151007 is a deficient number, since it is larger than the sum of its proper divisors (47994104993).

61515071151007 is a wasteful number, since it uses less digits than its factorization.

61515071151007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436865.

The product of its (nonzero) digits is 36750, while the sum is 40.

The spelling of 61515071151007 in words is "sixty-one trillion, five hundred fifteen billion, seventy-one million, one hundred fifty-one thousand, seven".