61012421007 has 16 divisors (see below), whose sum is σ = 86514274560. Its totient is φ = 38136897792.

The previous prime is 61012420993. The next prime is 61012421009. The reversal of 61012421007 is 70012421016.

It is not a de Polignac number, because 61012421007 - 2⁴ = 61012420991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61012421009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5511963 + ... + 5523020.

It is an arithmetic number, because the mean of its divisors is an integer number (5407142160).

Almost surely, 2^61012421007 is an apocalyptic number.

61012421007 is a deficient number, since it is larger than the sum of its proper divisors (25501853553).

61012421007 is a wasteful number, since it uses less digits than its factorization.

61012421007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11035102.

The product of its (nonzero) digits is 672, while the sum is 24.

Subtracting 61012421007 from its reverse (70012421016), we obtain a palindrome (9000000009).

The spelling of 61012421007 in words is "sixty-one billion, twelve million, four hundred twenty-one thousand, seven".