75561497007 has 16 divisors (see below), whose sum is σ = 101436487680. Its totient is φ = 50031025632.

The previous prime is 75561496993. The next prime is 75561497021. The reversal of 75561497007 is 70079416557.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (75561496993) and next prime (75561497021).

It is not a de Polignac number, because 75561497007 - 2⁴ = 75561496991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75561490007) 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, 426594 + ... + 577152.

It is an arithmetic number, because the mean of its divisors is an integer number (6339780480).

Almost surely, 2^75561497007 is an apocalyptic number.

75561497007 is a deficient number, since it is larger than the sum of its proper divisors (25874990673).

75561497007 is a wasteful number, since it uses less digits than its factorization.

75561497007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151702.

The product of its (nonzero) digits is 1852200, while the sum is 51.

The spelling of 75561497007 in words is "seventy-five billion, five hundred sixty-one million, four hundred ninety-seven thousand, seven".