403128272761 has 16 divisors (see below), whose sum is σ = 434590018560. Its totient is φ = 372848636160.

The previous prime is 403128272759. The next prime is 403128272779. The reversal of 403128272761 is 167272821304.

It is not a de Polignac number, because 403128272761 - 2¹ = 403128272759 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (403128272731) 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, 613645 + ... + 1087573.

It is an arithmetic number, because the mean of its divisors is an integer number (27161876160).

Almost surely, 2^403128272761 is an apocalyptic number.

It is an amenable number.

403128272761 is a deficient number, since it is larger than the sum of its proper divisors (31461745799).

403128272761 is a wasteful number, since it uses less digits than its factorization.

403128272761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475176.

The product of its (nonzero) digits is 225792, while the sum is 43.

The spelling of 403128272761 in words is "four hundred three billion, one hundred twenty-eight million, two hundred seventy-two thousand, seven hundred sixty-one".