5001661545 has 32 divisors (see below), whose sum is σ = 8680089600. Its totient is φ = 2449397760.

The previous prime is 5001661531. The next prime is 5001661559. The reversal of 5001661545 is 5451661005.

It is an interprime number because it is at equal distance from previous prime (5001661531) and next prime (5001661559).

It is not a de Polignac number, because 5001661545 - 2¹¹ = 5001659497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 228745 + ... + 249654.

It is an arithmetic number, because the mean of its divisors is an integer number (271252800).

Almost surely, 2^5001661545 is an apocalyptic number.

It is an amenable number.

5001661545 is a deficient number, since it is larger than the sum of its proper divisors (3678428055).

5001661545 is a wasteful number, since it uses less digits than its factorization.

5001661545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478465.

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 5001661545 is about 70722.4260401183. The cubic root of 5001661545 is about 1710.1653391649.

The spelling of 5001661545 in words is "five billion, one million, six hundred sixty-one thousand, five hundred forty-five".