10145264420661 has 4 divisors (see below), whose sum is σ = 13527019227552. Its totient is φ = 6763509613772.

The previous prime is 10145264420623. The next prime is 10145264420701. The reversal of 10145264420661 is 16602446254101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10145264420661 - 2⁶ = 10145264420597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10145264420861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1690877403441 + ... + 1690877403446.

It is an arithmetic number, because the mean of its divisors is an integer number (3381754806888).

Almost surely, 2^{10145264420661} is an apocalyptic number.

It is an amenable number.

10145264420661 is a deficient number, since it is larger than the sum of its proper divisors (3381754806891).

10145264420661 is an equidigital number, since it uses as much as digits as its factorization.

10145264420661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3381754806890.

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 10145264420661 in words is "ten trillion, one hundred forty-five billion, two hundred sixty-four million, four hundred twenty thousand, six hundred sixty-one".