1401387501275 has 12 divisors (see below), whose sum is σ = 1754925658224. Its totient is φ = 1110009900000.

The previous prime is 1401387501263. The next prime is 1401387501281. The reversal of 1401387501275 is 5721057831041.

It is not a de Polignac number, because 1401387501275 - 2⁴ = 1401387501259 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 277499951 + ... + 277505000.

It is an arithmetic number, because the mean of its divisors is an integer number (146243804852).

Almost surely, 2^{1401387501275} is an apocalyptic number.

1401387501275 is a deficient number, since it is larger than the sum of its proper divisors (353538156949).

1401387501275 is a wasteful number, since it uses less digits than its factorization.

1401387501275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555005062 (or 555005057 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 44.

The spelling of 1401387501275 in words is "one trillion, four hundred one billion, three hundred eighty-seven million, five hundred one thousand, two hundred seventy-five".